Home / 3,156.31-4,728.81-1,923.07

Finding the Fourth Proportional to 3,156.31, 4,728.81 and 1,923.07

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Solution

The fourth proportional to 3,156.31, 4,728.81 and 1,923.07 is: 2,881.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.31 : 4,728.81 = 1,923.07 : x
  2. Step 2: Convert to fraction form
    3,156.31/4,728.81 = 1,923.07/x
  3. Step 3: Cross multiply
    3,156.31x = 4,728.81 × 1,923.07
  4. Step 4: Simplify right side
    3,156.31x = 9,093,832.65
  5. Step 5: Solve for x
    x = 9,093,832.65/3,156.31
  6. Step 6: Final answer
    x = 2,881.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.